CN203476491U

CN203476491U - Engine system

Info

Publication number: CN203476491U
Application number: CN201320509894.8U
Authority: CN
Inventors: 罗伯特·安德鲁·韦德; 约翰·克里斯多夫·里格尔
Original assignee: Ford Global Technologies LLC
Current assignee: Ford Global Technologies LLC
Priority date: 2012-08-21
Filing date: 2013-08-20
Publication date: 2014-03-12
Anticipated expiration: 2023-08-20
Also published as: RU140186U1; US9157363B2; US20140053547A1; DE202013103691U1

Abstract

The utility model provides an engine system which comprises an integrated type exhaust manifold, straight array sets located on side faces of two external cylinders, a turbocharger provided with a turbine, and a mechanical supercharger, wherein the straight array sets belong to two internal cylinders, each cylinder is only communicated with one of four exhausting flow passes of the integrated type exhaust manifold, exhausting flow passes of the internal cylinders are converged into a first gas storage chamber, and exhausting flow passes of the external cylinders are converged into a second gas storage chamber; the inlet of the turbine is communicated with the first gas storage chamber but not communicated with the second gas storage chamber; the mechanical supercharger and a compressor of the turbocharger are arranged in parallel on the upstream of an intake manifold of an engine. The engine system solves the problem of crosstalk of the cylinders and has a satisfying effect.

Description

Engine system

Technical field

The utility model relates to a kind of engine system.

Background technique

The internal-combustion engine of vehicle can comprise that turbosupercharger is to increase Engine torque output.For example, the motor that has reduced size in order to improve fuel economy may need supercharging to reduce with free size and the engine power loss that causes, and can obtain this supercharging (for example, turbosupercharger can provide supercharging by forcing to suck air inlet also thereby improve Engine torque output) by turbosupercharger.Yet multiple shortcoming may be associated with only using turbosupercharger.In the situation that size of engine reduces, introduce the degree that turbosupercharger can limiting engine size reduction because only by turbosupercharger may not in whole operating ranges of motor, provide desired pressure than or mapping.In addition, more commonly, turbosupercharger may have slower transient response, and this may cause the bad sluggishness of Engine torque output.

In addition, when the exhaust of flowing out from a plurality of cylinders is directed to the entrance of turbo machine of turbosupercharger, according to the ignition order of cylinder and cam timing, between cylinder, bad crosstalking may occur, this may disturb burning.An example of crosstalking as the bad cylinder in turbosupercharged engine, turbo charged four cylinder engine can have 1-3-4-2 ignition order, wherein cylinder 1 and cylinder 4 are outer inside casings of engine cylinder-body, and cylinder 2 and cylinder 3 are inner cylinders of engine cylinder-body.Being communicated with between outer inside casing and inner cylinders can occur in the upstream of the turbo machine of turbosupercharger.For example, in the exhaust of cylinder 1, scan out event later, cylinder 3 can start exhaust, and this can increase the pressure and temperature that is captured in the gas in cylinder 1, and can increase the residual content in this cylinder.As a result, burning may affect adversely, and the tendency of pinking increases, and may need larger supercharging to realize required engine power output.These problems are the power capacity of limiting engine finally.

Can use several different methods to solve the problems referred to above.In order to solve turbosupercharger sluggishness, certain methods combines mechanical supercharger to supercharging is provided together with turbosupercharger, and wherein one or two in these two devices can be used in the given time.For example, US2010/0263375 has described a kind of pressurization system, the mechanical supercharger that it comprises turbosupercharger and can be used as compressor or expander.Under lower engine speed, mechanical supercharger provides supercharging, and for example, under higher engine speed (, for the engine speed compared with low), turbosupercharger provides supercharging while mechanical supercharger to be used as expander to provide cooling.In the method, from the exhaust of all cylinders, be all conducted through the turbo machine of turbosupercharger.Therefore, the method is crosstalked by cylinder may, and this may have adverse effect to engine combustion.

For solving cylinder, crosstalk, certain methods can be combined with binary vortices turbosupercharger.By the cylinder that may interfere with each other for exhaust pulses, two exhaust pathways that lead to separately different turbo machines are set, this binary vortices turbosupercharger has solved cylinder and has crosstalked.For example, in the four cylinder engine of igniting sequence with 1-3-4-2, during the expansion stroke of cylinder 1, between cylinder 1 and cylinder 2, exhaust valve may be there is overlapping.Yet, because binary vortices turbosupercharger provides separated exhaust pathway with cylinder 2 for cylinder 1, so can not disturb the burning in cylinder 2 from the exhaust pulses of cylinder 1.In addition, because this valve overlap does not have negative effect to burning, so can increase cam duration, thereby reduce motor pumping, do work and increase fuel efficiency.Although there is these advantages, the inventor has still recognized the variety of issue of binary vortices turbosupercharger method.For single turbosupercharger, binary vortices turbosupercharger is may be comparatively due to its complicated structure expensive and may have lower durability.In addition, at high temperature, its functional may losing to some extent.

Model utility content

Inventor of the present utility model has realized that, in engine system, in conjunction with mechanical supercharger, with solution transient response problem or by binary vortices turbosupercharger, replace turbosupercharger may not can to produce gratifying effect to solve cylinder cross-interference issue, and even may introduce the other problems such as above-described problem.Compare with said method, inventor of the present utility model has determined by the one or both in turbosupercharger and mechanical supercharger provides the engine system of supercharging and relevant method, thereby avoided transient response slowly, wherein only from the exhaust stream of cylinder subset, cross the turbo machine of turbosupercharger, thereby avoided cylinder to crosstalk.According to a kind of illustrative methods, only the exhaust from the first subset of cylinders can be directed to via IEM the turbo machine of turbosupercharger, only from the exhaust of the second subset of cylinders, can walk around this turbo machine via IEM is directed, and air inlet can be compressed by the one or both in the compressor of mechanical supercharger and turbosupercharger.Like this, by only guiding from the exhaust of cylinder subset by turbo machine, even when the exhaust valve aperture of cylinder is overlapping (this may occur according to the igniting sequence of cylinder), also can not be communicated with between the cylinder of different subsets.Therefore, can increase cam duration, thereby reduce pumping, do work and increase fuel efficiency.Because turbo machine is not flow through in the exhaust from the second subset of cylinders, so this exhaust can be flow through close coupled catalyst, thereby reduce the catalyzer light-off time that may improve motor discharge.In addition, because the use of IEM can be compatible mutually with this engine system, so can reduce the cost of turbocharger housing material.

The utility model provides a kind of method for motor on the one hand, comprising: by integrated form gas exhaust manifold (IEM), will only from the exhaust of the first subset of cylinders, guide to the turbo machine of turbosupercharger; By described integrated form gas exhaust manifold guiding, only from the exhaust of the second subset of cylinders, walk around described turbo machine; And by the compressor of described turbosupercharger and the one or both in mechanical supercharger, air inlet is compressed.

Preferably, by described integrated form gas exhaust manifold, by only guiding to described turbo machine from the exhaust of described the first subset of cylinders, comprise: described exhaust is guided to described gas-storing chamber, and described the first gas-storing chamber is only connected in described turbo machine by the grate flow channel of described the first subset of cylinders.

Preferably, by described integrated form gas exhaust manifold guiding, only from the exhaust of described the second subset of cylinders, walking around described turbo machine comprises: described exhaust is guided in the second gas-storing chamber, described the second gas-storing chamber is only connected in atmosphere by the grate flow channel of described the second subset of cylinders, and wherein said the first gas-storing chamber and described the second gas-storing chamber are not communicated with in the upstream of described turbo machine.

Preferably, the outlet of described turbo machine is combined with described the second gas-storing chamber in the upstream of close coupled catalyst.

Preferably, described method also comprises: before the cylinder igniting of the first subset, the cylinder of the second subset is lighted a fire and continued during engine running and with this order, cylinder is lighted a fire, wherein said the first subset of cylinders is the inner cylinders of the engine cylinder-body of motor, and described the second subset of cylinders is the outer inside casing of described engine cylinder-body.

Preferably, described method also comprises: during the instantaneous conditions at the rotating speed of described turbo machine during lower than threshold value, inlet stream is guided to described mechanical supercharger and do not guide to described compressor; At the rotating speed of described turbo machine, higher than driver's moment of torsion of described threshold value and request, during the stable state situation during higher than threshold value, described inlet stream is guided to described mechanical supercharger and described compressor; And during the stable state situation during lower than described threshold value, described inlet stream is guided to described compressor and do not guide to described mechanical supercharger higher than driver's moment of torsion of threshold value and described request at the rotating speed of described turbo machine.

Preferably, described instantaneous conditions is that driver dubs throttle.

The utility model provides a kind of engine system on the one hand, comprising: integrated form gas exhaust manifold (IEM); Be positioned in upright arrangement group of two inner cylinders of the side of two outer inside casings, in four grate flow channels of each cylinder and described integrated form gas exhaust manifold only one be communicated with, the grate flow channel of described inner cylinders converges in the first gas-storing chamber, and the grate flow channel of described outer inside casing converges in the second gas-storing chamber; The turbosupercharger with turbo machine, the entrance of described turbo machine is communicated with and is not communicated with described the second gas-storing chamber with described the first gas-storing chamber; And mechanical supercharger, described mechanical supercharger is arranged in the upstream of engine intake manifold and the compressor parallel of described turbosupercharger.

Preferably, described the first gas-storing chamber and described the second gas-storing chamber are only exhaust outlets of described integrated form gas exhaust manifold, and not fluid connection each other in described integrated form gas exhaust manifold.

Preferably, engine system also comprises and is connected in releasedly the bent axle of described motor and the clutch of described mechanical supercharger.

Preferably, in the upstream of described intake manifold and the passage in the described mechanical supercharger of parallel connection and the downstream of described compressor, be provided with intercooler.

Preferably, engine system is also included in the outlet of the described turbo machine that the upstream of close coupled catalyst is communicated with described the second gas-storing chamber.

Preferably, engine system also comprises the turbo machine bypass passageways that described turbine inlet is connected with described turbo machine outlet and is arranged in the exhaust gas by-pass valve in described turbo machine bypass passageways.

Preferably, engine system also comprises the EGR passage that described the second gas-storing chamber is connected with the entrance of described compressor, the 2nd EGR passage that described turbo machine outlet is connected with the entrance of described compressor, and the 3rd EGR passage that described turbine inlet is connected with the outlet of described compressor.

The utility model provides a kind of method for motor, comprise: during transient behaviour, increase the aperture of the first throttle valve in mechanical supercharger downstream, described mechanical supercharger and the compressor parallel that turbosupercharger by only receiving from the exhaust stream of cylinder subset drives reduce the opening value of second throttle valve in described compressor downstream simultaneously; And during lower state, based on engine operation condition, regulate the aperture of described first throttle valve and described the second throttle valve.

Preferably, during described transient behaviour, the rotating speed of described turbo machine is lower than threshold value, and during described lower state, the rotating speed of described turbo machine is higher than described threshold value.

Preferably, the single-row cylinder arrangement that described cylinder is engine cylinder-body, described cylinder subset only comprises the inner cylinders of described engine cylinder-body.

Preferably, described method also comprises the first gas-storing chamber that all exhaust streams from described inner cylinders is guided to integrated form gas exhaust manifold, and the second gas-storing chamber that all exhaust streams of other cylinders from described engine cylinder-body is guided to described integrated form gas exhaust manifold, wherein said the first gas-storing chamber is not communicated with in described integrated form gas exhaust manifold with described the second gas-storing chamber, and described turbo machine does not receive the exhaust stream from described the second gas-storing chamber.

Preferably, during described lower state, regulate the aperture of described first throttle valve and described the second throttle valve also to comprise: if the moment of torsion of driver request surpasses threshold value, to increase the aperture of described the second throttle valve and regulate the aperture of described first throttle valve; And if the moment of torsion of described driver request is no more than described threshold value, increase the aperture of described the second throttle valve, close described first throttle valve, and by clutch, the bent axle of described mechanical supercharger and described motor is disengaged.

Preferably, during described method is also included in compressor surge state: by clutch, described mechanical supercharger is connected with the bent axle of described motor; And when increasing the aperture of described first throttle valve, reduce the aperture of described the second throttle valve.

Should be appreciated that the general introduction providing is above to introduce the series of concepts further describing for the form to simplify in detailed specification.This is not intended to determine key feature or the essential feature of claimed theme, and wherein the scope of claimed theme is limited uniquely by claims.In addition, claimed theme is not limited to solution hereinbefore or the mode of execution of any shortcoming of mentioning in any part of the present disclosure.

Accompanying drawing explanation

Fig. 1 schematically shows the exemplary embodiment of the two independent plenums I4 motors that comprise turbosupercharger and mechanical supercharger.

Fig. 2 shows the illustrative methods based on current instantaneous conditions and required engine torque operation turbosupercharger and mechanical supercharger.

Fig. 3 shows for formulating the illustrative methods of various boost mode.

Fig. 4 shows the illustrative methods of the expected to rank control catalyzer by-pass throttle valve based on bad motor discharge.

Fig. 5 shows for control engine to solve the illustrative methods of surge condition.

Embodiment

Following description relates to the method and system that carries out supercharging by the one or both combustion motor in mechanical supercharger and turbosupercharger.As shown in Figure 1, engine system can be included in the upstream of intake manifold and the mechanical supercharger that turbosupercharger is arranged in parallel, and this system has for controlling the valve of air inlet stream.System can also comprise integrated form gas exhaust manifold, and wherein the exhaust from the first subset of cylinders advances to the first gas-storing chamber (plenum), and advances to the second gas-storing chamber from the exhaust of the second subset of cylinders.The first gas-storing chamber and the second gas-storing chamber can not communicate with each other in IEM, and the first gas-storing chamber can be communicated with turbine inlet, and the second gas-storing chamber can not be communicated with the first gas-storing chamber or turbine inlet.Method described herein can be combined with this engine system, to realize the advantage be associated with the use of turbosupercharger, avoid the shortcoming of crosstalking (by the exhaust of the adjacent cylinder of sequence of lighting a fire from cylinder being guided in disconnected independent gas-storing chamber each other) such as transient response (auxiliary by the supercharging from mechanical supercharger) and cylinder slowly simultaneously.

By the one or both in the compressor of mechanical supercharger described herein and turbosupercharger, compress and can be called " the separated strategy of supercharging ", and this strategy can be realized lot of advantages.By in system in conjunction with mechanical supercharger, can during the various engines operational situation that comprises the instantaneous conditions such as driver dubs throttle, provide moment supercharging, thereby solve and the transient response of only using turbosupercharger to be associated.In other words, can realize by mechanical supercharger " moment of torsion flex point "; Can select belt wheel velocity ratio and mechanical supercharger discharge capacity so that more slow-revving moment of torsion flex point to be provided, and the size of turbosupercharger can be set as transmitting needed supercharging during peak power situation.Compare with conventional turbosupercharged engine, this strategy can produce the torque curve of relative broad range.In addition, set up the size that mechanical supercharger can also reduce turbosupercharger in system, make turbosupercharger to set size for two cylinder rather than four cylinder engine, this provides cost advantage and has vacateed the space in multiple-motor cabin more.In addition, no matter supercharging is only by turbosupercharger, to be provided, provided or only by mechanical supercharger, provided by mechanical supercharger together with turbosupercharger, and engine system can both be processed the exhaust of 1050 ℃, thereby improves fuel economy qualified discharge.For example, the use of high temperature material in turbine cylinder can realize better λ=1 line, and can realize exhaust and arrive one or more catalyzer in emission control systems and heating.In addition, during compressor surge situation, engine system can be controlled as temporarily transfers to mechanical supercharger by inlet stream, until surge condition solves.Finally, between high-engine output on-stream period, mechanical supercharger can be disengaged with engine crankshaft, and air inlet can not flow through mechanical supercharger, and this can reduce bent axle working load and thereby improve power stage and Engine Durability.

Fig. 1 has schematically shown the engine system 100 in the drive system that can be included in Motor Vehicle.Engine system 100 is multicylinder engines.As hereinafter described in detail, turbosupercharger 102 and mechanical supercharger 104 are included in motor to provide supercharging to motor respectively or synergistically according to operational situation.In embodiment described herein, engine system 100 is 4 cylinders in upright arrangement (I4) motors, and it has four cylinders 110 that are arranged in engine cylinder-body.

Engine cylinder-body comprises bent axle 108 and four cylinders 110.Four cylinders 110 are denoted as respectively 1,2,3 and 4, and wherein cylinder 1 and cylinder 4 are outer inside casings, and cylinder 2 and cylinder 3 are inner cylinders (that is, cylinder 2 and cylinder 3 are arranged in adjacent to each other between cylinder 1 and cylinder 4 on engine cylinder-body).Here, inner cylinders 2 and cylinder 3 can be called the first subset of cylinders, and outer inside casing 1 and cylinder 4 can be called the second subset of cylinders, and outer inside casing can be described as being positioned at the side of inner cylinders.Although engine system 100 is the in-line four cylinder motors with four cylinders, should be appreciated that in other embodiments, engine system 100 can comprise the cylinder of varying number.Cylinder 110 all can comprise spark plug and for fuel being delivered directly to the fuel injector of firing chamber.Yet in an alternative embodiment, each cylinder 110 can not comprise spark plug and/or direct injection fuel injector.

Engine system 100 can be controlled by control system 194 at least in part.Control system 194 is depicted as and receives from the information of a plurality of sensors 196 and transmit control signal to a plurality of actuators 198.Sensor 196 can comprise for example pressure transducer, temperature transducer, air-fuel ratio sensor and component sensor.Actuator 198 can comprise for example by electric control clutch, control valve and the throttle valve described in this article.Control system 194 can comprise controller 112.This controller can receive the input data from various sensors, input data processed, and the instruction corresponding to one or more programs based on programming in controller or code and in response to the processed various triggers of input data-triggered.In addition, controller 112 can receive vehicle operator 132 by the input of input device 130.In this example, input device 130 comprises accelerator pedal and for generating the pedal position sensor 134 of ratio pedal position signal PP.

Engine system 100 comprises gas handling system 114.Ambient windstream can enter gas handling system by the first gas-entered passageway 116, and wherein the flow velocity of air inlet can be controlled by first throttle valve 118 at least in part.Therefore, the position of first throttle valve can be used as the engine running parameter of the air mass flow in control engine.Air-strainer 120 can be arranged in the upstream of first throttle valve 118 in the first gas-entered passageway 116, to remove solid particulate matter from air inlet.

In the downstream of first throttle valve 118, the first gas-entered passageway 116 is divided into two parallel passages, i.e. mechanical supercharger passage 122 and compressor passage 124.Mechanical supercharger 104 is arranged in mechanical supercharger passage 122 with the mechanical supercharger throttle valve 126 that is arranged in the downstream of mechanical supercharger 104.Similarly, the compressor 128 of turbosupercharger 102 is arranged in compressor passage 124 with the compressor throttle valve 136 that is arranged in the downstream of compressor 128.The part of the upstream that is positioned at compressor 128 of compressor passage 124 can be called suction port of compressor, and the part in the downstream that is positioned at compressor 128 of compressor passage 124 can be called compressor outlet.Similarly, the part of the upstream that is positioned at mechanical supercharger 104 of mechanical supercharger 122 passages can be called mechanical supercharger entrance, and the part in the downstream that is positioned at mechanical supercharger 104 of mechanical supercharger passage 122 can be called mechanical supercharger outlet.The outlet of compressor outlet and mechanical supercharger is in the merge downstream of compressor throttle valve 136 and mechanical supercharger throttle valve 126 in the second gas-entered passageway 138, and the second gas-entered passageway 138 leads to intake manifold 140.Intake manifold 140 can be configured to supply with air inlet and/or fuel to cylinder 110.As shown in Figure 1, intake manifold 140 can be branched off into a plurality of air inlet runners 150, and each air inlet runner is communicated with cylinder 110 fluids.The air inlet that each cylinder 110 can receive from intake manifold 140 by connected air inlet runner 150.Each air inlet runner can optionally be communicated with this cylinder by one or more intake valves of corresponding cylinder 110.Like this, by the air of mechanical supercharger 104 and/or compressor 128 compressions, can be communicated with cylinder 110 fluids by intake manifold 140.The compressor 128 of mechanical supercharger 104 and turbosupercharger 102 can be configured to increase the wherein amount of the air of at least one cylinder 110 that enters.Like this, mechanical supercharger and the compressor throughput in control engine system 100 at least in part.Can change the decrement that offers one or more cylinders 110 by turbosupercharger and/or mechanical supercharger by controller 112.

In the exemplary embodiment shown in Fig. 1, the ignition order of cylinder 110 is that 1-3-4-2 is favourable.Yet cylinder 110 can be lighted a fire and not depart from the scope of the present disclosure with different orders.

The compressor 128 of turbosupercharger 102 can be at least in part driven by the turbo machine 142 being connected in the vent systems 144 of motor by axle 146.The relatively simply design (for example,, for binary vortices turbosupercharger) of turbosupercharger 102 can advantageously can be constructed turbosupercharger by enough high temperature materials.Mechanical supercharger 104 can be driven by motor and/or motor at least in part, and can not comprise turbo machine.For example, as shown in Figure 1, mechanical supercharger 104 can be connected with the bent axle 108 of engine system 100 by electric control clutch 174.During the situation of expectation mechanical supercharger compress inlet air, controller 112 can make bent axle 108 be connected with mechanical supercharger 104 by solenoidoperated cluthes 174.When mechanical supercharger is connected with bent axle by clutch, mechanical supercharger can drive so that air inlet is compressed by launched machine.For example, the transient response time of turbosupercharger 102 can be greater than 1 second in some cases, and mechanical supercharger 104 can provide the response time of 0.2 second in whole engine speed range.Advantageously, when not needing mechanical supercharger compress inlet air, for example, during only using the situation of turbosupercharger compress inlet air, mechanical supercharger can disconnect by clutch and bent axle, makes mechanical supercharger on motor, not apply load.

In the embodiment shown in fig. 1, intercooler 148 is arranged in the second gas-entered passageway 138.Intercooler 148 can increase engine efficiency and reduce pinking by reducing the temperature of air inlet, and during air inlet is by the supercharging situation of mechanical supercharger and/or turbosupercharger compression, the temperature of air inlet may be undesirably high.

The downstream of the intercooler 148 in the second gas-entered passageway 138, can arrange that the second throttle valve 176 is to control the flow from compressor and/or mechanical supercharger to the air inlet of motor.

The vent systems 144 of engine system 100 can comprise and is configured to discharge from the integrated form gas exhaust manifold (IEM) 152 of the products of combustion of cylinder 110.IEM152 can comprise grate flow channel 154, and each grate flow channel can optionally be communicated with this cylinder by one or more exhaust valve (not shown) of corresponding cylinder 110.The grate flow channel that is connected to cylinder 2 and cylinder 3 is in IEM152 and converges at the first gas-storing chamber 156, and the grate flow channel that is connected to cylinder 1 and cylinder 4 is in IEM152 and converges at the second gas-storing chamber 158.The first and second gas-storing chambers are not communicated with, and similarly, the grate flow channel that is connected in the cylinder in different subsets is not communicated with yet.Therefore, can be completely separated from the exhaust pulses of the cylinder in different subsets, make can not damage the burning in another cylinder adjacent in igniting sequence from the recoil of a cylinder.

IEM152 can comprise cooling system 178.Cooling system 178 can receive from the engine coolant of motor and conduct coolant and spread all over IEM.Leaving before IEM is directed to radiator subsequently, freezing mixture can be by coolant pump pumping through engine cylinder-body, then along the path of one or more parallel connections and/or series connection, arrives IEM and through IEM always.

The first gas-storing chamber 156 and the second gas-storing chamber 158 can be in the outside extensions of IEM152.Outside at IEM152, the first gas-storing chamber 156 guiding from the first subset of cylinders (for example, inner cylinders 2 and 3) exhaust is by the turbo machine 142 of turbosupercharger 102, for example, and the second gas-storing chamber 158 guiding from the second subset of cylinders (, outer inside casing 1 and 4) engine exhaust is directly by being arranged in the one or more emission control systems in the second gas-storing chamber 158, and these devices are for the engine exhaust in process course before engine exhaust is released to atmosphere.Because turbo machine is walked around in exhaust mobile in the second gas-storing chamber, so the pumping acting in two cylinders that can reduce to be communicated with the second gas-storing chamber, this can improve fuel efficiency.In exhaust, through after turbo machine 142, from the exhaust of the first gas-storing chamber, by turbo machine outlet passage 160, be directed to the second gas-storing chamber that is positioned at emission control system upstream.In the embodiment in figure 1, described one or more emission control system comprises catalyzer (underbody catalyst) 164 at the bottom of close coupled catalyst 162 and car.

Turbo machine bypass passageways 166 can be included in system alternatively, to allow the exhaust in the first gas-storing chamber 156 to walk around turbo machine 142 via being arranged in the control of the exhaust gas by-pass valve 168 in turbo machine bypass passageways.Turbo machine bypass passageways 166 can be connected to the first gas-storing chamber 156 of turbo machine 142 upstreams, and is connected in turbo machine outlet passage 160 to connect this two passages.When exhaust gas by-pass valve 168 is closed completely, all exhaust streams in the first gas-storing chamber 156 can be conducted through turbo machine 142, then by turbo machine outlet passage 160.When exhaust gas by-pass valve 168 is opened completely, the nearly all exhaust stream in the first gas-storing chamber 156 can be walked around turbo machine 142 and flow directly in turbo machine outlet passage.Like this, the amount of walking around the exhaust of turbo machine can be controlled by adjusting exhaust gas by-pass valve 168.

Catalyzer bypass passageways 170 also can be included in system alternatively, makes exhaust can walk around close coupled catalyst 162.One end of catalyzer bypass passageways 170 can be connected in turbo machine outlet passage 160 between the second gas-storing chamber 158 and turbo machine bypass passageways 166 and the joint of turbo machine outlet passage 160.The other end of catalyzer bypass passageways 170, can be connected in the second gas-storing chamber 158 between catalyzer at the bottom of close coupled catalyst and car.Catalyzer bypass throttle valve 172 can be arranged in catalyzer bypass passageways.When catalyzer bypass throttle valve 172 is during in full open position, the exhaust in turbo machine outlet passage can be flow through catalyzer bypass passageways, and thereby walks around close coupled catalyst.On the contrary, when catalyzer bypass throttle valve 172 is during in buttoned-up status, the exhaust in turbo machine outlet passage can be flow through the second gas-storing chamber 158 that turbo machine outlet passage enters close coupled catalyst 162 upstreams.In certain embodiments, the aperture of catalyzer bypass throttle valve can be controlled as and make the exhaust of the desired proportion in turbo machine outlet passage walk around close coupled catalyst, and the remainder of exhaust continues in turbo machine outlet passage and flow through close coupled catalyst.

As shown in Figure 1, exhaust gas recirculatioon (EGR) system 180 can guide to gas handling system by various EGR passages by the exhaust of the expectation part from vent systems.The one EGR passage 182 can be connected in the second gas-storing chamber 158 the compressor passage 124 of the upstream of compressor 128.The 2nd EGR passage 184 can be connected in turbo machine outlet passage 160 the compressor passage 124 of the upstream of compressor 128.The 3rd EGR passage 186 can be connected in the first gas-storing chamber 156 the compressor passage 124 in the downstream of compressor 128.The one EGR passage 182 can comprise that EGR valve 188, the two EGR passages 184 can comprise the 2nd EGR valve 190, and the 3rd EGR passage 186 can comprise the 3rd EGR valve 192.The amount that offers the EGR of gas handling system 114 can be changed by an EGR valve, the 2nd EGR valve and the 3rd EGR valve by controller 112.Alternatively, EGR sensor can be arranged in EGR passage, and can indicate one or more in pressure, temperature and the concentration of the exhaust in each passage.Egr system 180 can be by making a part of recirculation of engine exhaust get back to gas handling system 114 and advantageously reduce NOx and discharge.

Fig. 2 shows based on current instantaneous conditions and required engine torque and operates the illustrative methods 200 of turbosupercharger and mechanical supercharger.Fig. 2 can for example be combined with the motor of Fig. 1.

In step 202, method 200 comprises and judges whether instantaneous conditions exists.Instantaneous conditions can for example comprise that driver dubs throttle and engine cold starting.During this instantaneous conditions, be only that the compressor of turbosupercharger possibly cannot provide sufficient supercharging.Yet, it is desirable to, once reach stable state situation, only the compressor by turbosupercharger provides supercharging, to mechanical supercharger and motor are disengaged by electric control clutch, and thereby reduces the load on motor.

If there is instantaneous conditions, the answer in step 202 is "Yes" so, and method 200 proceeds to step 204.In step 204, method 200 comprises only uses mechanical supercharger to compress air inlet.Shown in Figure 3 and be below described for performing step 204 illustrative methods.By only using mechanical supercharger to compress air inlet, the compressor of turbosupercharger is subject to less resistance, this contributes to the turbo machine of turbosupercharger to rotate to rapidly expectation rotating speed, to finally can only be provided the supercharging value of expectation by turbosupercharger.

After being only switched to the pattern by mechanical supercharger supercharging, method 200 proceeds to step 206.In step 206, method 200 comprises whether the turbo machine that judges turbosupercharger rotates under the speed of expectation.As an example, the speed of expectation can be the speed that the compressor of turbosupercharger provides the supercharging amount of the moment of torsion that can reach driver's request.

If the answer in step 206 is "No", method 200 turns back to step 204 to continue utilizing mechanical supercharger to compress air inlet so, thereby rotates to the speed of expectation to the more time of turbosupercharger.Otherwise if the answer in step 206 is "Yes", method 200 proceeds to step 208 so.

In step 208, method 200 comprises whether the Engine torque of judgement request is greater than threshold value.As an example, threshold value can be corresponding to Engine torque amount, wherein only by the supercharging of mechanical supercharger or only the supercharging of the compressor by turbosupercharger can not reach this Engine torque amount.

If the answer in step 208 is "No", method 200 proceeds to step 210 so.In step 210, method 200 comprises only uses the compressor of turbosupercharger to compress air inlet.Shown in Figure 3 and be below described for performing step 210 illustrative methods.By request moment of torsion when allowing the value of this operation only the compressor by turbosupercharger supercharging is provided, thereby mechanical supercharger can advantageously be disengaged by electric control clutch and engine crankshaft the load that reduces motor.

In addition, if the answer in step 208 is "Yes", method 200 proceeds to step 212 so.In step 212, method 200 comprises utilizes the compressor both of mechanical supercharger and turbosupercharger to compress air inlet.Shown in Figure 3 and be below described for performing step 212 illustrative methods.When the Engine torque of request surpasses threshold value, the compressor both of mechanical supercharger and turbosupercharger can provide supercharging to motor.In this operation period, the supercharging being provided by mechanical supercharger prevents contingent sluggishness during the compressor boost situation of turbocharger only, and the supercharging being provided by turbosupercharger reduced to the demand of mechanical supercharger and thereby the load and/or the energy that have reduced motor use, this depends on how to be turbosupercharger energy supply.

Turn back to step 202, if there is no instantaneous conditions, answers so as "No" and method 200 end.

Fig. 3 shows for carrying out the illustrative methods 300 of three kinds of boost mode.The method of Fig. 3 can for example be combined with the method for the motor of describing in Fig. 1 and Fig. 2.The method of Fig. 2 can be used for judging which kind of boost mode is suitable during given engine operating status, and the method for Fig. 3 can be used for carrying out this boost mode.Should be appreciated that in some instances, boost mode can be overlapping, and this overlapping can dynamically control and calibrate to realize power train, thereby optimize runnability sensation and fuel economy.

In 302, method 300 for example comprises that the method by manner of execution 200 judges and carries out which kind of boost mode.

If only selected by mechanical supercharger boost mode, method 300 proceeds to step 304 from step 302 so.In step 304, carry out only by mechanical supercharger boost mode.This is included in step 310 and by clutch, mechanical supercharger is connected with the bent axle of motor.This clutch can be the electric control clutch such as the clutch 174 of describing in Fig. 1.In this case, if mechanical supercharger is not also connected by clutch with bent axle, controller 112 can send clutch is connected mechanical supercharger signal with bent axle to electric control clutch 174.Like this, the compressor of mechanical supercharger can be driven by engine crankshaft.In other non-limiting example, except bent axle, the compressor of mechanical supercharger can also be by being driven by battery powered motor, or only by motor, driven.

Only carry out by mechanical supercharger boost mode and be also included in step 312 completely close compressor throttle valve and open mechanical supercharger throttle valve completely.As shown in Figure 1, compressor throttle valve 136 can be arranged in the downstream of the compressor 128 of turbosupercharger, and mechanical supercharger throttle valve 126 can be arranged in the downstream of mechanical supercharger 104.By complete close compressor throttle valve and open mechanical supercharger throttle valve completely, air inlet is guided to mechanical supercharger passage 122 and is not entered compressor passage 124 from the first gas-entered passageway 116.

In step 314, carry out and only by mechanical supercharger boost mode, also comprise and close turbine exhaust gas bypass valve completely.As shown in Figure 1, turbine exhaust gas bypass valve 168 can be arranged in turbo machine bypass passageways 166.Close turbine exhaust gas bypass valve completely and play the effect of closing turbo machine bypass passageways, this causes all exhaust streams in the first gas-storing chamber to cross turbo machine 142.By only by making all exhaust streams in the first gas-storing chamber cross turbo machine during the boost mode of mechanical supercharger supercharging, can reach quickly the turbine speeds of expectation, for example, make only to use turbosupercharger or use in combination to provide supercharging to motor with mechanical supercharger.

In step 316, only carry out and also comprise that by mechanical supercharger boost mode the motor based on expection discharges to control catalyzer bypass throttle valve.It is shown in Figure 4 and will be described below that motor based on expection discharges to control the illustrative methods of catalyzer bypass throttle valve.

Turn back to step 302, if selected mechanical supercharger and turbocharger compressor boost mode, method 300 proceeds to step 306 from step 302 so.

In step 306, carry out mechanical supercharger and turbocharger compressor boost mode.This is included in step 308 and by clutch, mechanical supercharger is connected with the bent axle of motor, as described for step 310 above.

Carrying out mechanical supercharger and turbocharger compressor boost mode also comprises: the opening value of controlling turbocharger compressor and mechanical supercharger throttle valve in step 320 based on engine operating status.As shown in Figure 1, compressor throttle valve 136 can be arranged in the downstream of turbocharger compressor 128, and mechanical supercharger throttle valve 126 can be arranged in the downstream of mechanical supercharger 104.Except other factors of the compressor rotary speed such as mechanical supercharger compressor, the opening value of mechanical supercharger throttle valve also affect in the first gas-entered passageway 116 by the ratio of air inlet mobile in mechanical supercharger passage 122.Similarly, except other factors of the rotating speed such as turbocharger compressor, the opening value of turbocharger compressor throttle valve also affect in the first gas-entered passageway 116 by the ratio of air inlet mobile in compressor passage 124.Various engine operating status can affect the expectation opening value of turbosupercharger and mechanical supercharger throttle valve.For example, turbocharger compressor and mechanical supercharger throttle valve expectation opening value separately can be the amount that causes the supercharging value of the Engine torque that request is provided when combining.As another example, the expectation opening value of turbocharger compressor throttle valve can be subject to current turbine speeds and/or the possibility impact of surge occurs under various compressor throttle valve opening values at current turbine speeds lower compression machine.

In step 322, carry out mechanical supercharger and turbocharger compressor boost mode and also comprise based on operating condition control turbine exhaust gas bypass valve opening value.As shown in Figure 1, turbine exhaust gas bypass valve 168 can be arranged in turbo machine bypass passageways 166.In the first gas-storing chamber 156, by flowing through turbo machine bypass passageways 166, walk around the ratio of the exhaust of turbo machine 142, can be depending on the opening value of turbine exhaust gas bypass valve 168.Owing to flowing through the amount of the exhaust of turbo machine, affect the rotating speed of turbo machine, so by controlling the opening value of turbine exhaust gas bypass valve, can reach the turbine speeds of expectation.The turbine speeds of expectation can be based on engine operating status.For example, at compressor surge, be about to occur but only by mechanical supercharger, can not be provided enough supercharging with during meeting the state of engine output torque of request, can increase a little the opening value of turbine exhaust gas bypass valve to reduce turbine speeds to a certain degree, still by turbo machine compressed machine, provide certain supercharging simultaneously.

In step 324, carry out mechanical supercharger and turbocharger compressor boost mode and also comprise: the motor based on expection discharges to control catalyzer bypass throttle valve.It is shown in Figure 4 and will be described below that motor based on expection discharges to control the illustrative methods of catalyzer bypass throttle valve.

Turn back to step 302, if only selected by turbocharger compressor boost mode, method 300 proceeds to step 308 from step 302 so.

In step 308, carry out only by turbocharger compressor boost mode.This is included in step 326 and by clutch, the bent axle of mechanical supercharger and motor is disconnected, because can be without by engine-driving turbosupercharger during only by turbocharger compressor boost mode.Clutch can be the electric control clutch such as the clutch 174 of describing in Fig. 1.In this case, if clutch and mechanical supercharger are current, by clutch, be connected in bent axle, controller 112 can send the signal that clutch is disconnected mechanical supercharger and bent axle to electric control clutch 174.In another example, the compressor of mechanical supercharger can be driven rather than by engine-driving by motor, in this case, will take other measures so that during only by turbocharger supercharged pattern driving device pressurized machine not.

Carry out and only by turbocharger compressor boost mode, also comprised: in step 328, open compressor throttle valve completely and close mechanical supercharger throttle valve completely.As shown in Figure 1, compressor throttle valve 136 can be arranged in the downstream of the compressor 128 of turbosupercharger, and mechanical supercharger throttle valve 126 can be arranged in the downstream of mechanical supercharger 104.By opening compressor throttle valve completely and closing mechanical supercharger throttle valve completely, air inlet is guided to compressor passage 124 and is not entered mechanical supercharger passage 122 from the first gas-entered passageway 116.

In step 330, carry out and only by turbocharger compressor boost mode, also to be comprised: based on operating condition with for 322 described same way, control turbine exhaust gas bypass valve opening values above.

In step 332, carry out and only by turbocharger compressor boost mode, also comprised: the Exhaust Control of Engine catalyzer bypass throttle valve based on expection.The illustrative methods of Exhaust Control of Engine catalyzer bypass throttle valve based on expection is shown in Figure 4 and be described hereinafter.

The bad motor discharge value that Fig. 4 shows based on expection is controlled the illustrative methods 400 of catalyzer bypass throttle valve.The method of Fig. 4 can be used together with the motor of describing in Fig. 1, and can carry out in conjunction with the method shown in Fig. 2 and Fig. 3.

In step 402, method 400 comprises the bad levels of emissions of determining expection for current engine operating status.For example, a plurality of positions in gas handling system and vent systems can arrange that multiple sensors 196 is with measured parameter value, and these parameter values are such as being air inlet-fuel ratio, air inlet/delivery temperature, exhaust NOx content etc.Value by these sensor measurements can be sent to controller 112, and together with other factors, controller 112 can the value based on sensing be determined the bad levels of emissions of expecting.

In step 404, method 400 comprises whether the bad levels of emissions of judgement expection is greater than threshold value.Threshold value can be that bad engine exhaust discharges the value while surpassing allowance, if the discharge of bad engine exhaust is only by catalyst treatment at the bottom of car.Allowance can be for example the amount of government permission, or can be relevant to the drainage rate of motor.

If the answer in step 404 is "No", be no more than under the situation of allowance so, bad engine exhaust discharge can be only by catalyst treatment at the bottom of car.In this case, method 400 proceeds to step 406 to open catalyzer bypass throttle valve completely from step 404.For example, controller 112 can send the signal that throttle valve is opened completely to catalyzer bypass throttle valve.Opening catalyzer bypass throttle valve completely can cause by flowing through unimpeded catalyzer bypass passageways 170, walking around close coupled catalyst 162 from the exhaust of the first gas-storing chamber and the second gas-storing chamber.Exhaust in the first gas-storing chamber can be flow through turbo machine 142 and/or turbo machine bypass passageways 166(, and this depends on the opening value of turbine exhaust gas bypass valve 168), then enter turbo machine outlet passage 160.The flow resistance of the ingress of close coupled catalyst 162, can be higher than the flow resistance of the ingress of catalyzer bypass passageways 170.Because the flow resistance of the ingress of catalyzer bypass passageways is lower, thus in turbo machine outlet passage from most of exhaust of the first gas-storing chamber or all exhaust can flow through catalyzer bypass passageways, thereby walk around close coupled catalyst.Similarly, most of exhaust in the second gas-storing chamber 158 or all exhaust can be transferred in turbo machine outlet passage 160, then because the lower flow resistance in the ingress of catalyzer bypass passageways (for the flow resistance of the ingress of close coupled catalyst) enters in catalyzer bypass passageways 170.During not causing bad exhaust emissions to surpass the state that allows grade, walk around close coupled catalyst, can advantageously reduce to need the frequency of close coupled catalyst regeneration.After step 406, method 400 finishes.

Otherwise if the answer in step 404 is "Yes", method 400 proceeds to step 408 to judge whether motor is carrying out cold starting from step 404 so.During engine cold starting, can expect high-grade bad exhaust emissions.In addition, during engine cold starting, the temperature that exhaust catalyst can be below initiation temperature, this can reduce the ability that catalyzer reduces bad exhaust emissions.

If the answer in step 408 is "Yes", method 400 proceeds to step 412 to close catalyzer bypass throttle valve completely so.For example, controller 112 can send the signal that throttle valve cuts out completely to catalyzer bypass throttle valve.Close catalyzer bypass throttle valve completely, can make at the bottom of flowing through car, before catalyzer 164, to flow through close coupled catalyst 162 from all exhausts of the first gas-storing chamber and the second gas-storing chamber.This operation can advantageously be accelerated to reach initiation temperature at close coupled catalyst place.In addition, even if before close coupled catalyst reaches its initiation temperature, can also process to a certain extent bad exhaust emissions according to the type of catalyzer.Therefore, make exhaust stream cross close coupled catalyst before close coupled catalyst reaches initiation temperature, it can be preferred during the cold start when exhaust emissions is relatively high, walking around catalyzer.After step 412, method 400 finishes.

Otherwise, if being "No" and motor, the answer in step 408 do not carry out cold starting, method 400 proceeds to step 410 so, with the bad levels of emissions based on expection, regulates catalyzer bypass throttle valve opening value.Due to during the highest bad levels of emissions may occur in engine cold starting, thus during other states, can allow at least a portion exhaust to walk around close coupled catalyst, thus reduce the frequency that close coupled catalyst need to be regenerated.Therefore, the bad levels of emissions of the expection based on definite in step 402, controller 112 can be determined the maximum opening value of catalyzer bypass throttle valve, this is no more than allowed bad discharge amount by guaranteeing, makes by the exhaust stream of close coupled catalyst minimum simultaneously.After step 410, method 400 finishes.

Fig. 5 shows and controls turbosupercharger and mechanical supercharger to solve the illustrative methods 500 of turbocharger compressor surge situation.Turbocharger compressor surge is following undesirable condition, that is, and and the undesirable condition that may cause ratio engine to occur can be compressed at the more air of air that suck preset time time at high compressor rotating speed.The high pressure at compressor outlet place can force reduction compressor rotary speed, and thereby reduction turbine speeds.When motor is processed the air inlet of compression, can again increase turbine speeds, and the corresponding increase of compressor rotary speed can make surge condition repeat.Therefore, for example, at engine operating status, do not have in vicissitudinous situation, can allow surge condition, because turbo-charger shaft rotating speed is replacing fast and at a slow speed repeatedly.Method 500 has utilized engine system 100 to have mechanical supercharger and turbosupercharger, to solve this bad surge condition.

In step 502, method 500 comprises and judges whether to occur turbocharger compressor surge.For example, controller 112 can the sensing value based on parameter judge, these parameters are such as being pressure in the compressor passage 124 in downstream of turbo-charger shaft rotating speed over a period to come, compressor 128 etc.

If the answer in step 502 is "No", there is not turbocharger compressor surge in explanation, and method 500 finishes.In addition, if the answer in step 502 is "Yes", method 500 proceeds to step 504 so.In step 504, method 500 comprises by electric control clutch mechanical supercharger is connected with engine crankshaft.As described in step 310 and step 318 for Fig. 3 above, mechanical supercharger is connected and can makes the compressor of engine-driven pressurized machine with engine crankshaft, and driven compressor can provide supercharging to motor.Should be appreciated that mechanical supercharger is connected with engine crankshaft, can not take measures so in step 504 if for example during turbocharger compressor and mechanical supercharger boost mode.

After step 504, method 500 proceeds to step 506.In step 506, method 500 comprises the opening value that reduces the opening value of compressor throttle valve and increase mechanical supercharger throttle valve.For example, the increase of the opening value of the decrease of the opening value of compressor throttle valve and mechanical supercharger throttle valve, surge condition and/or the relevant sensor parameter value of other engine operating status that can be based on to current.The opening value that reduces compressor throttle valve can cause less air stream overcompression machine 128, and this can contribute to alleviate compressor surge.In addition, the opening value that increases mechanical supercharger throttle valve can increase the amount of the air that flows through mechanical supercharger 104, makes to flow through the decrease of air of turbocharger compressor for carrying the conveying of the supercharging of desired levels there is no adverse effect to motor.As an example, if motor turns round under only by turbocharger compressor boost mode when surge being detected, can close the throttle valve of mechanical supercharger completely so until increase this throttle valve opening value in step 506.As another example, if motor turns round under turbocharger compressor and mechanical supercharger boost mode when surge being detected, when increasing the opening value of throttle valve of mechanical supercharger in step 506, the throttle valve of mechanical supercharger can partially open so.

After step 506, method 500 proceeds to step 508 to judge whether compressor surge solves.This judgement can be similar to the initial decision that compressor surge occurs.If judge that surge does not also solve, method 500 turns back to step 506 so, further to reduce the opening value of compressor throttle valve and further to increase the opening value of mechanical supercharger throttle valve.Like this, can further reduce to flow through the amount of air of turbocharger compressor to attempt to alleviate compressor surge, the fluctuation of the amount that simultaneously can further increase the air that flows through mechanical supercharger to avoid air inlet to boost and produce, this fluctuation may affect engine output torque.In another non-limiting example, controller 112 can take other measure to reduce compressor surge, for example, reduce the opening value of first throttle valve 118 to reduce the total amount of inlet stream.

Yet if surge solves, the answer in step 508 is "Yes" so, and method 500 proceeds to step 510 to judge current boost mode from step 508.For example, current boost mode can be stored in the storage in control system 194.The value of storing can be before manner of execution 500 the coupled condition of the parameter value based on sensing and clutch determine, described parameter is for example compressor throttle valve opening value, mechanical supercharger throttle valve opening value, all electric control clutchs 174 as shown in Figure 1 of described clutch.

If current boost mode is only by the pattern of turbocharger compressor supercharging, method 500 proceeds to step 512 so.In step 512, method 500 comprises closes mechanical supercharger throttle valve completely and opens compressor throttle valve completely.After step 512, method 500 proceeds to step 514, to make mechanical supercharger and engine crankshaft disconnect by electric control clutch.By remove mechanical supercharger from boost-up circuit, these actions only can recover the pattern by turbocharger compressor supercharging.According to the power source of mechanical supercharger, step 514 can comprise other actions such as making the motor stopping of driving device pressurized machine.After step 514, method 500 finishes.

Otherwise if current boost mode is turbocharger compressor and mechanical supercharger boost mode, method 500 proceeds to step 516 so.In step 516, method 500 comprises the opening value that regulates compressor and mechanical supercharger throttle valve based on engine operating status.For example, the opening value of throttle valve can return to manner of execution 500 opening value of throttle valve before.For example, before manner of execution 500, controller 112 can be stored in this information in control system 194, and can in step 516, access this information to recover previous throttle valve state.Therefore, can adjust throttle valve opening value to reduce compressor surge, once and solve surge and just can be resumed temporarily.After step 516, method 500 finishes.

Note, the exemplary control comprising herein and estimation routine can be used for various motors and/or Vehicular system structure.Specific program as herein described can represent one or more in the processing policy of any amount, such as event-driven, drives interrupts, Multi task, multithreading etc.Like this, the various actions that illustrate, operation or function can shown in order execution, executed in parallel or omit in some cases.Similarly, processing sequence not necessarily needs to realize function and the advantage of exemplary embodiment described herein, but provides with description for convenience of explanation.One or more can repeating according to the specific policy using in described behavior and function.In addition, described behavior can represent to be programmed into the code in the computer-readable recording medium in control system in figure ground.

Should be appreciated that structure disclosed herein and to be arranged in be exemplary in essence, and these specific embodiments should not understand in restrictive meaning, because numerous modification is possible.For example, technology above can be applicable to V-6, I-4, I-6, V-12, opposed 4 cylinders and other engine types.Theme of the present disclosure comprises all novelties and non-obvious combination and the sub-portfolio of various system disclosed herein and structure and other features, function and/or attribute.

Claims particularly point out and are considered to novel and apparent particular combination and sub-portfolio.These claims may relate to " element " or " the first element " or be equal to appellation.Such claim is appreciated that the combination that comprises one or more this elements, both neither requiring nor excluding two or more this elements.Can be by the modification of the claim to current or by propose other combinations and the sub-portfolio of the next claimed disclosed feature of new claim, function, element and/or attribute in the application or related application.Require to compare wider in scope, narrower, identical or different from original rights, these claims are also construed to be included in theme of the present disclosure.

Claims

1. an engine system, is characterized in that, comprising:

Integrated form gas exhaust manifold;

Be positioned in upright arrangement group of two inner cylinders of the side of two outer inside casings, in four grate flow channels of each cylinder and described integrated form gas exhaust manifold only one be communicated with, the grate flow channel of described inner cylinders converges in the first gas-storing chamber, and the grate flow channel of described outer inside casing converges in the second gas-storing chamber;

The turbosupercharger with turbo machine, the entrance of described turbo machine is communicated with and is not communicated with described the second gas-storing chamber with described the first gas-storing chamber; And

Mechanical supercharger, described mechanical supercharger is arranged in the upstream of engine intake manifold and the compressor parallel of described turbosupercharger.

2. engine system according to claim 1, is characterized in that, described the first gas-storing chamber and described the second gas-storing chamber are only exhaust outlets of described integrated form gas exhaust manifold, and not fluid connection each other in described integrated form gas exhaust manifold.

3. engine system according to claim 2, is characterized in that, also comprises and is connected in releasedly the bent axle of described motor and the clutch of described mechanical supercharger.

4. engine system according to claim 3, is characterized in that, in the upstream of described intake manifold and the passage in the described mechanical supercharger of parallel connection and the downstream of described compressor, is provided with intercooler.

5. engine system according to claim 4, is characterized in that, is also included in the outlet of the described turbo machine that the upstream of close coupled catalyst is communicated with described the second gas-storing chamber.

6. engine system according to claim 5, is characterized in that, also comprises the turbo machine bypass passageways that described turbine inlet is connected with described turbo machine outlet, and is arranged in the exhaust gas by-pass valve in described turbo machine bypass passageways.

7. engine system according to claim 6, it is characterized in that, also comprise the EGR passage that described the second gas-storing chamber is connected with the entrance of described compressor, the 2nd EGR passage that described turbo machine outlet is connected with the entrance of described compressor, and the 3rd EGR passage that described turbine inlet is connected with the outlet of described compressor.